Regular Expressions for an Expert Developer

Regular expressions are an essential part of any programmer’s toolkit. These are very useful kits for web developer to validate, match or replace text. To help user there are number of tools and resources are developed. The tools and resources like Greedliness / Laziness, Back referencing, Word boundaries, Named Groups, Word Boundaries, Atomic Groups, Recursion, Call Backs, Commenting, Regex helps to test regular expression in a different ways.